Failed to spoof mac address!

Hi I am trying to use this guide to change mac address and anonymize hostname but I failed many times :cry:

Can anyone guide me step by step .

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At which point did you fail? Any error messages? Which steps have you performed?

Right click on the Network Manager icon of your NetVM in the tray and click ‘Edit Connections…’

I have selected “Wired Conenction1” form Ethernet

Cloned Macaddress ------- Random

my second step :
I selected Wi-Fi
Cloned Macaddress ------- Random

Then I have opened sys-net terminal .

sudo nano /etc/NetworkManager/conf.d/

00-macrandomize.conf

then saved it

And? What happened? What did you put into file? How do you know randomization failed?

In this file sudo nano /etc/NetworkManager/conf.d/

I put 00-macrandomize.conf
And saved it
What I should do next ?

In this file sudo nano /etc/NetworkManager/conf.d/

I put 00-macrandomize.conf
And saved it
What I should do next ?